Id be fine with a small cast if there were NEW characters being developed since FC, but the characters they keep developing are 4 characters that have appeared before, and in the case of Xavier, Magneto and Mystique, they have appeared in ALL the team movies. oh, and same as Wolverine. so this means 5 characters from original trilogy as the only being developed in the past.
They keep "building" the franchise with them, so there isnt any new character that the audience can meet and follow through each movie.
They are basically repeating the same formula, but this time on the past. And thats being really cheap. whether those 5 characters are good characters.
The sad thing is this they keep developing Xavier, Magneto and Wolverine on the past, but nothing more than that. Some fans are happy with it, but as a x-men fan, you have to understand that is dissapointing to me.
Personally, I see the young Xavier, Magneto, Mystique and Beast as pretty much completely different characters from their OT counterparts. So for me, DoFP will only be the second time around with these characters.
I can see why it would be disappointing for some fans, and perhaps after DoFP they can shift the focus on other characters, but at the present I don't think that matters would be helped by throwing in a bunch of underdeveloped characters onscreen.
						